Percepción categórica y discriminación del orden temporal en sonidos de habla y de no-habla
- Rosner, Burton S.
- Fahey, Richard P.
- García-Albea Ristol, José Eugenio
- López Bascuas, Luis Enrique
ISSN: 0214-3550, 1579-3702
Year of publication: 1998
Volume: 10
Issue: 1-2
Pages: 211-226
Type: Article
More publications in: Cognitiva
Abstract
Native English and Spanish speakers provided 2IAX roving discrimination functions for three continua: synthetic [ba]-[pa] stimuli varying in voice-onset-time (VOT), a noise-lead-time (NLT) continuum where a noise and a buzz started at different times but terminated together, and a tone-onset-time series with a variable onset time between 500 Hz and 1500 Hz coterminous sinusoids. Onset-time differences for each continuum ranged from-35 to 55 ms. The corresponding d' measures were computed from discrimination scores. In addition, the identification indexes obtained in López-Bascuas, Fahey, García-Albea and Rosner (1998) were converted to d' so that categorical perception could be assesed by comparing these d' with the discrimination ones. The study of identification and discrimination functions showed that 1) categorical perception ocurred for all continua and 2) perception of VOT by adults seems not to be causally related to the auditory temporal lag perception